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| 聚环氧琥珀酸萃取锰泥残渣中铬的研究 | |
| 引用本文： | 张立颖,潘宁,陆建平,尹沾合,谭芳维,潘乾,唐燕葵.聚环氧琥珀酸萃取锰泥残渣中铬的研究[J].环境污染与防治,2012,34(6):8-10. |
| 作者姓名： | 张立颖 潘宁 陆建平 尹沾合 谭芳维 潘乾 唐燕葵 |
| 作者单位： | 1. 广西工业职业技术学院食品与生物工程系,广西南宁,530003 2. 广西大学化学化工学院,广西南宁,530004 3. 广西大学环境学院,广西南宁,530004 |
| 基金项目： | 国家自然科学基金资助项目，广西工业职业技术学院科研基金资助项目 |
| 摘 要： | 聚环氧琥珀酸(PESA)是一种具有无磷及非氮结构、环境友好型水溶性聚合物,且具有螯合多价金属阳离子的性能和可生物降解性的特征,选取其作为锰泥残渣中铬的螯合萃取剂,研究了不同pH、螯合萃取剂剂量、搅拌时间下PESA对铬的萃取率。结果表明:(1)最佳萃取条件为pH=4、PESA剂量30mg/g、搅拌时间60min;在最佳萃取条件下,铬的萃取率可达95%。(2)从结构上看,PESA是由醚基和羧基基团组成的高分子聚合物,羧基基团是与金属离子作用的主要官能团,它对Ca2+、Mg2+、Zn2+、Cr(Ⅲ)、Cr(Ⅵ)和Pb2+等有较强的螯合能力;从溶液的配位角度看,PESA与金属有较强的结合能力。因此,PESA对锰泥残渣中的铬有萃取作用。 |
| 关 键 词： | 聚环氧琥珀酸 萃取 锰泥残渣 铬 |
Extraction of chromium from the manganese slag with ployepoxysuccinic acid |
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| ZHANG Liying , PAN ning , LU Jian ping , YIN Zhanhe , TAN Fangwei , PAN Qian , TANG Yankui.Extraction of chromium from the manganese slag with ployepoxysuccinic acid[J].Environmental Pollution & Control,2012,34(6):8-10. | |
| Authors: | ZHANG Liying PAN ning LU Jian ping YIN Zhanhe TAN Fangwei PAN Qian TANG Yankui |
| Institution: | 1.Department of Food and Biological Engineering,Guangxi Industrial and Vocational College of Technology,Nanning Guangxi 530003;2.College of Chemistry and Chemical Engineering,Guangxi University,Nanning Guangxi 530004;3.College of Environmental Science,Guangxi University,Nanning Guangxi 530004) |
| Abstract: | Polyepoxysuccinic acid(PESA),with property of chelating polyvalent metal cations and characteristics of biodegradability,is a kind of non phosphorus,nitrogen and environment-friendly water-soluble polymer.In this paper,PESA is selected as a chelating extractive agent to extract chromium from manganese slag.The effects of pH,PESA dosage and stirring time on chromium extraction efficiency are investigated.The results show:(1) the best extraction conditions are pH=4,PESA dose of 30 mg/g and stirring time of 60 min;under these optimal extraction conditions,the extraction efficiency of chromium reach to 95%.(2) From a structural point of view,PESA is a polymer composed of ether and carboxy groups,in which the carboxyl group is the main functional group reacting with metal ions such as Ca2+,Mg2+,Zn2+,Cr(Ⅲ),Cr(Ⅵ),Pb2+,etc;there is a stronger binding ability exists between PESA and metal ion.Therefore,PESA has the extraction effect on chromium in the manganese slag. |
| Keywords: | ploy epoxy succinic acid extraction manganese slag chromium |
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